Support for resistances



Dec. 17, 1929. w. buBiuER 1,740,150

' SUPPORT FOR nssrsvumcss Filed May 2. 5,925

Mum/v D3522; WM M ATTORNEY Patented Dec. 17,1929

UNITED STATES PATENT OFFICE WILLIAM DUBILIER, OF ROCHELLE, NEW YORK, ASSIGNORJTODUBILIEB1@N" DENSER CORPORATION, OF NEW YORK, N. Y.,'A CORPORATION OF DELAWARE surron'r non RESISTANGES Application filed May 2,

tion are set forth in the following description, taken with the accompanying drawings; and I of course reserve the right to make any changes that are within the principle of the invention as indicated by the broad meanings of the terms of the appended claims.

On the drawings,

Figure 1 is a side view ofa support for a grid leak resistance according to my inven' tion, with a condenser associated therewith;

Figure 2 is a top plan of what appears in Figure 1;

Figure 3.is a sectional view on the line 83 of Figure-2 Figures 4 and 5 are views similar to Figure 3, showing modifications; and

Figure 6 is a diagrammatic view of the manner in which the condenser and grid leak are connected for inclusion in a radio circuit when the resistance is mounted in the sup port.

The same numerals identify the same parts throughout. a, y

In the particular description of the structure shown in the drawings, I use the numeral 1 to indicate plates or outside covers of insulation for a condenser, preferably bakelite. One of these plates has extended ends 2 and the two plates are held together by clamps 3 attached to the ends 2 by rivets 4 and engaging the, opposite ends of the smaller bakelite plate or cover as illustrated clearly inFigures 1 and 2. vBetweenthe plates or covers 1 is the stack or body 5 of the condenser consisting of, sheets of metal foil separated by insulation such as mica, part of the sheets 1925. Serial No. 27,610.

of foil being in electrical connectionwith one of the clamps 3, and the remainder ,in connection with the other clamp 3, so thatwhen the ends of a circuit are joined to the clamps 3, the condenser can be operatively connected therein. To each of the clamps 31 secured a clip 6 in position to be normally perpendicular to the'two plates 1, these clips-Constituting a support for thegrid leak resistance 8 and having apertures? in their ends. The grid leak resistance may be of the usual type comprising a sleeve-9 of insulation, containing resistance material with metal caps'lO conical inform closing the endsoffthe sleeve and each connected to one extremity of the resistance materialinside of the sleeve19. The condenser 1here shown is fully described in my application Seriall'No. 692,869 ffiled February 14th, 1924, Patent No.1,5'7550t5 of March2,l1926, but may be of any other suitable construction. 1

In condensers of this sort with clipsjifor mounting the grid leak, resistance,*the-conserted into, the end of one of the clips with the collar or flange 121facing theother c'lip. With, this bushing in position, if the, resistance 8 is mounted in the support by pushing the coned end of one cap 10 into theaperture 7 of one of the clips 6, andthe end ofgalthe other cap 10 into the bushing 11 carried by the other clip, the condenserand resistance will then be connected at one end, but disconnected or insulated, from each other at: their opposite extremities or terminals.

The bushing 11 is of course .hollowandllas a bore 13 therethroughwhich' is ,enlarged adjacent the collar 12, as shownvat '14. This bore is lined with a sleeve or piece vofvmetal tubing 15 having a flared end 16 which fits the enlarged end 14 of the bore 13 of the bushing, and adjacent the opposite end of the collar, this piece of tubing 15 is squeezed or flattened to widen it as at 17 and thus make it tightly engage both ends of the collar, so that it cannot become loose or be caused to slip out of the bore 13.

With the grid leak resistance mounted in the support and having one of its caps 10 engaging one clip 6 and in direct connection therewith, and the other cap 10 inserted into the flared end 16 of the metallic lining of the bore 13 of the bushing, the condenser and grid leak resistance will be connected as shown in Figure 6, the condenser being indicated at 19 and the resistance at 20. The terminal of the condenser which is directly united to one terminal of the grid leak re sistance can then be connected into circuit by joining a conductor to one of the clamps 3 in any convenient manner, while the opposite terminals of the condenser and grid leak resistance can be joined separately into circuit as required by connecting a conductor as before to the remaining clamp 3, and another conductor to the tube or lining 15 in the bushing 11. As this lining is hollow, a wire or conductor can easily be connected to it by pushing the wire into the end of the lining 15 as far as the flattened part 17 will permit. The wire can be joined to the lining 15 by soldering or in any desired fashion.

The bushing 11 can be made without the lining 15 as shown in Figure 4. F or this purpose, it is only necessary to provide one of the caps 10 of the grid leak resistance with a projection 18 to pass through the bore 13 in the bushing 11 and extend out as far as is required to enable a conductor to be joined to this projection. This projection 18 may be hollow like the lining 15.

In practice, the support can be utilized as shown and described above, to enable the grid leak resistance to be connected into circuit, by uniting one extremity thereof to one terminal of the condenser only. In this case, the bushing 11 will be carried by one of the clips 6, so that one of the ends 10 of the resistance will be in direct contact with one of the clips 6 and the other end 10 of the resistance will make electrical contact with the lining 15, but be insulated from the other clip 6; or if the construction shown in F igure 4: be utilized, the bushing 11 here having no lining, one extremity of the resistance Wlll still be insulated from the condenser and can be joined in circuit as required by is removed from the aperture 7 of the clip carrying it and then the resistance can be mounted in the support by having the coned ends of its two caps 10 engage the clips (5 directly, one cap having its coned end fitting into one aperture 7 and the other cap having its coned end fitting into the aperture 7 of the remaining clip. Thus the support enables the grid leak and condenser to be connected in any desired manner, while at the same time the support mounts the grid leak resistance on the condenser in the usual way and enables the two devices as before to be made up and handled in the form of a single unit.

Figure 5 shows the lining 15 having a collar 21, between which and the flared end 16 the bushing 13 is held fast.

If desired, the bushing 11 can be used for both clips, thus enabling the resistance to be" mounted on the condenser, but connected into circuit independently thereof.

The resistance as shown has the form of a cartridge with the terminal caps 10 to enable it to be mounted in the support.

Having described my invention, what I believe to be new and desire to secure and protect by Letters Patent of the United States is 1. The combination of a condenser, an elec trically conductive support carried by said condenser, and a resistance to be mounted in said support and connected to said support at one end, the support having means by which the resistance is insulated therefrom at the other.

2. The combination of a support compris ing a pair of electrically conductive clips, a resistance to be engaged at its ends by said clips, one extremity of said resistance being in direct connection with one of the clips and the other extremity of the resistance being insulated from the remaining clip.

3. The combination of a condenser, a pair of electrically conductive clips secured to the condenser and constituting a support, a grid leak resistance engaged by and connected to one of said clips at one end, and having its remaining end engaged by but insulated from the other clip.

4. The combination of a support, a resistance to be mounted in said support and connected to the support at one end, and an insulating bushing in said support for engaging the opposite end of said resistance.

5. The combination of a support and a resistance therefor, the resistance engaging said support at one end and being in electrical connection with said support at said end, and an insulating bushing in said support to engage the opposite end of said resistance, said bushing being removable and having a conductive lining therein, said lining projecting to enable the lining to be connected in an electrical circuit.

6. A condenser having clips attached thereto for holding a grid leak, With an insulating bushing extending through at least one of the clips.

7. The combination ofa condenser and a grid leak, clips mounted on the condenser, and an insulating bushing having a metallic lining for said grid leak in at least one of the clips.

8. A condenser and grid leakhaving clips connected to the condenser terminals With an insulating bushing carried by at least one of said clips.

9. A condenser having clips attached to the terminals of the condenser for holding a grid leak, with an insulating bushing through at least one of the clips.

10. The combination of a support and a resistance therefor, the resistance engaging said support at one end and being in electrical connection With said support at said end, and an insulating bushing in said support to engage the opposite end of said resistance, said bushing being removable and having a conductive lining therein, said lining projecting to enable the lining to be connected in an electrical circuit, said lining being expanded on one side of the bushing and flattened and widened on the other to prevent removal from the bushing.

11. The combination of a support and a resistance therefor, the resistance engaging said support at one end and being in elec trical connection With said support at said end, and an insulating bushing in said support to engage the opposite end of said re sistance, said bushing being removable and having a conductive lining therein, said lining projecting to enable the lining to be connected in an electrical circuit, said lining being expanded on one side of the bushing to receive an end of the resistance and deformed on the other side of the bushing to prevent removal from the support.

12. The combination of a support and a resistance therefor, the resistance engaging said support at one end and being in electrical connection with said support at said end, and an insulating bushing in said support to engage the opposite end of said resistance, said bushing being removable and having a conductive lining therein.

Signed at New York, in the county of Bronx and State of New York, this 1st day of May, A. D. 1925.

WILLIAM DUBILIER. 

